ANN: Jason Thompson's House of 1000 Manga: Parasyte

Jason Thompson: They drift down from the skies like dandelion seeds: little filmy spores, almost too small to see. When they hit the ground, they crack open revealing transparent worms with screw-shaped heads, which crawl into houses, crawl into people's ears, and into their brains. Then they become the brain. The person is dead; all that is left is their body, with an alien thing riding on top of it, a shapeshifting blob that mimics a human head.